Rasulullah berwudhu sekali sekali
Imam Nasa'i : 79أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى قَالَ حَدَّثَنَا يَحْيَى عَنْ سُفْيَانَ قَالَ حَدَّثَنَا زَيْدُ بْنُ أَسْلَمَ عَنْ عَطَاءِ بْنِ يَسَارٍ عَنْ ابْنِ عَبَّاسٍ قَالَأَلَا أُخْبِرُكُمْ بِوُضُوءِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَتَوَضَّأَ مَرَّةً مَرَّةً
Narrated to us [Muhammad bin Al Mutsanna] he said :Narrated to us [Yahya] from [Sufyan] he said :Narrated to us [Zaid bin Aslam] from ['Atha bin Yasar] from [Ibn Abbas], he said : "Shall I inform you about the way of ablution of the Messenger of Allah peace be upon him? He peace be upon him performed ablution once (for each part of the ablution)."
Hadith Corroboration :
Imam Ahmad : 144, 146, 550, 831, 966, 1296, 1968, 2291, 2913, 15106, 15845, 15869, 17381, 25782, 25786
Imam Bukhari : 137, 153
Imam Abu Dawud : 102, 104, 106, 109, 110, 111, 113, 118, 119, 120
Imam Tirmidzi : 32, 40
Imam Nasa'i : 79, 100, 101
Imam Ibnu Majah : 397, 399, 405, 406, 429, 430, 431, 437, 438, 439
Imam Darimi : 693, 705